on on our broadcast tonight, boiling point. at two different places today from coast to coast, anger erupts over this economy. not so fast. a big, bad glitch in america's air traffic system makes it a bad day r a lot of travelers. mixed messages. trying to make sense of these new recommendations on mammograms and breast exams for women under 50. out of control. the news tonight about the obesity epidemic and where it's hitting hardest. and our planet in a very remote place. what the ice can tell us about where we'll all headed. "nightly news" begins now.